Carbureter for internal-combustion engines.



' No.881,80 0. PATENTEDMARJO, 1908.

I s. A. HORSTMANN.

GARBURETER FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEG. 3. 1908.

v 4 SHEETB-SHEET 1.

, E I J M farm 2 7 4 27' No. 881,800. I PATENTED MAR.10, 1908. s. A. HORSTMANN.

GA RBURETEB. FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEC. 3. 1906.

4 SHEETSSHEET 2.

No. 881,800. I PATENTED MAR. 10; 1908. s. A. HORSTMANN.

GARBURETER FOR-INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DBO. s. 1900. v

4sHEETssHnnT s.

No. 881,800. PATENTED MAR. 10, 1908.

. S. A. HORSTMANN.

GARBU RETER FOR INTERNAL COMBUSTION ENGINES.-

APPLICATION FILED DBO. s. 1906.

4 SHEETSSHEET 4.

Was.

.UNITED- s'rAT s PATENT orrroia SIDNEY ADO-LPH noas'rirAN'Nj or B;&TH,FIZNGLAND, as

srenoa" or ONE-SIXTH To ALBERT HORSTMANN', ONE-SIXTH 'ro GUSTAV or'ro IIENEYI-IORSTMANN, oNE-six'rrr fro ER'Ns'r,

" HERMANN HORSTMANN, ONE-SIXTH TO WIL iA-i'iTHoMsoN. EDGAR, F BATH, ENGLAND,

AND ONE-SIXTH TO B. A. LISTER & COMPANY, LIMITED, OF DU-RSLEY, ENGLAND.

' cARBUnn'r-ER roe immmomsms mamas.

To all whom it may concern:

Be it known that I, SIDNEY AD'OLPH HonsTMANN, a subject of the King-of Gi-eat Britain and Ireland, and resident of L8 orfolk Crescent, Bath, county of Somerset, England, have invented certain'nevw and useful Improvements in-Carbureters for Internal-Combustion Engines, of which the following is a-specification.

This invention of improvements incarbuspecification of Letters Patent. Application'flled December 3,1906. Serial No. 346,140.

Patented March 10, 1 908 sheets of drawings in'whichz Figure 1 is apartsedtional elevation of an 55 paratus constructed in accordance :with' t us invention illustrating the application of the same in combination withasing'le jet-or nozzle; Fig. 2 is a se'etion on line a, m, Fig. 1,

orifice of diaphragmopen; Fig. B -'a 'viewto similar to Fig. 2 but'with erifieeo'fdia partially closed; Figs. 4 and 5 represent e 4 the following description and accompanyin orifice around the jet of an'ordinary carbu- .Inp

raters for internal combustion engines-has for its object to provide for efiiciently vaporizing petroleum spirit, alcohol and the like used in such engines, by regulating the size. of an reter, thusobtaining more or less suction at jet'and' a'requiredmixture of gas and air. For. this purpose the said invention. con- Wsists essentially in the adaptation to the inlet pipe of an engine of an iris diaphragm (theinner edges 0 he blades orfins of whlch "are' keen' or thinned down) incornbination' with a single or compound jet and with or without a throttle. i 1

acti'ce the diaphragm is arranged at the lower part of'the inlet pipe to the en ine and close to' the top ofv the jet or jets w i ch iiike letters of reference-indicate emssponding parts in the several figures. f Referring to the drawings, a, is the float feed chamber and b the jet which may be a single at asfin. Figs. 1 to 3 or a. compound jet as in i s. 6, to 8, carried thereby and c the ma be carried by-.the float feed chamber inlet tube to the engine said inlet tube being an is or are arranged below said diaphragm. The jet when a compound one is used con-- 'sists as a whole of a series of small nozzles or jets, one of which is laced in or near the cente'r-of the orifice o the diaphragm and by preference extends through the same, the others being arranged at var in distances from center of said orifice or ia hragm and belowthe same so that more or ess jets can be successivel'y brought into or out of active work by increasing or diminishing the size of the orifice oi diaphragm as required. This device in practice also forms an effective throttleprovided the jets are suitably arranged, or for the same urpose (throttling) an iris diaphragm or 01; mi known form of throttle ma be arranged at a slight distance above the rst named orifice or diaphragm, said throttle being so disposed that one lever actuate-s them conjointly at ratios varying or otherwise. j If desired, however, a throttle maybe used separately and independently.

In order that the said invention may be clearly understood reference is to be had to the mixing chamber of the carbureter. Located at the lower end of the inlet tube and within a loose ring (1 is arranged an iris diaphragm e of ordinary construction with the exception that the inner edges f of its leaves, plates or g are keen, thinned or beveled as shown in Figs. ,4 and 5, said loose ring d being operated by the handle or lever h .to

increase or diminish the opening or orifice 1. formed by the leaves of the diaphragm for the purpose of controlling the passage of air therethrough, said leaves or fins g owing to their keenness or tl inness vibrati and thereby atomizing th fuel, thus promoting efficient vaporization.= In Figs. 1, 2, 6 and 8 the diaphragm is shown with the maximum amount of opening, in Fig. 3- partly closed, and in Fig. 7 with the maximum closure, so that operating the same either by hand or by means directly connected to the engine gov- 16 30 ern'or more or less suction at jet or ets and the required mixture of gas and air is ob tained, said mixture being thr'ottled or not" as required in any suitable manner.

When a compound 'et or nozzle 6 is employed, Figsxfi to 8, :t e same consists of a series of small jets or pipes b (which may if desired be bent at the top at right angles or 5 providedwithaside.opening at top), one of said jets 'b 'being' li preference centrally arranged and the ot'er's at varying distances therefrom so that all or any of the jets can be fbrought into or put out of action by increas- 10 ing or diminishing the sizeof the opening of the diaphragm b' operating the lever .h, the vibration of the t in orskeen inner edge of the a diaphragm caused by the passage of air past the same atomizing the fuel, thus romoting .15 efiieient va orizing, any' number 0 jets being used accor ing to requirements.

To effect-the throttling of the fuel a second iris diaphragm shown in Fig. 6 and Operated b lever or handle is is arranged in the inlet tube a and at a slight distance above the diaphragm e, their'respective levers or handles Te and 72. being connected up so that one lever'may -actuate them 'eonjointl at ratios varying or otherwise. In place 0 the diaphragmf j any. of the known forms of throttle maybe employed and operated in conjunction with the' diaphragm e, or 11'' de-' sired a throttle may" be used separately and independently. v

Having no scribed my invention, what Iclaim asnew'a d desire to secure by Letters Patent QfQheI-United States is:'

.1 drip barbureter for internal combustion es lid-combination with a mixing 1 chamber-59in.1ns d1aphragm arranged 1n thelower part of said mixing chamber and having the inner edges of its leaves thinned so that the vibrations of the same caused by the passage of air atomizes the fuel.

2. In a carburetor for internal combustion engines, the combination with a mixing chamber, of an iris diaphragm and an operating leverarranged at the lower end of said mixin chamber, and a compound nozzle forme of a series of small nozzles so disposed that the said small nozzles may be successively brought into action or put out of action by operati said iris diaphragm.

3. .In a carbureter or internal combustion engines, the combination with a compound nozzle formed of a series of small nozzles, of

an iris dia hragm provided with leaves thinned at tieir inner edges and arranged to vibrate under the assage of the air.

4; Ina carbureter or internal combustion. engines, the combination with a mixing chamber, an iris diaphragm arranged in said mixing chamber and provided with leaves the inner edges of which are thinned, and a.

nozzle;of an additional throttle arranged in the mixing chamber above the said iris diaphragm, and means for operating said dia* phragm and throttle.-

In testimony whereof I have affixed my signature in presence of two witnesses.

, SIDNEX ADOLPH 'ueRsrii/iti'. Witnesses:

HILDA GARRETT,

, WILLIAM .Sm'rn; 

